include/linux/numa_memblks.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NUMA_MEMBLKS_H
   3 #define __NUMA_MEMBLKS_H
   4
   5 #ifdef CONFIG_NUMA_MEMBLKS
   6 #include <linux/types.h>
   7
   8 #define NR_NODE_MEMBLKS         (MAX_NUMNODES * 2)
   9
  10 void __init numa_set_distance(int from, int to, int distance);
  11 void __init numa_reset_distance(void);
  12
  13 struct numa_memblk {
  14         u64                     start;
  15         u64                     end;
  16         int                     nid;
  17 };
  18
  19 struct numa_meminfo {
  20         int                     nr_blks;
  21         struct numa_memblk      blk[NR_NODE_MEMBLKS];
  22 };
  23
  24 int __init numa_add_memblk(int nodeid, u64 start, u64 end);
  25 void __init numa_remove_memblk_from(int idx, struct numa_meminfo *mi);
  26
  27 int __init numa_cleanup_meminfo(struct numa_meminfo *mi);
  28
  29 int __init numa_memblks_init(int (*init_func)(void),
  30                              bool memblock_force_top_down);
  31
  32 #ifdef CONFIG_NUMA_EMU
  33 int numa_emu_cmdline(char *str);
  34 void __init numa_emu_update_cpu_to_node(int *emu_nid_to_phys,
  35                                         unsigned int nr_emu_nids);
  36 u64 __init numa_emu_dma_end(void);
  37 void __init numa_emulation(struct numa_meminfo *numa_meminfo,
  38                            int numa_dist_cnt);
  39 #else
  40 static inline void numa_emulation(struct numa_meminfo *numa_meminfo,
  41                                   int numa_dist_cnt)
  42 { }
  43 static inline int numa_emu_cmdline(char *str)
  44 {
  45         return -EINVAL;
  46 }
  47 #endif /* CONFIG_NUMA_EMU */
  48
  49 #ifdef CONFIG_NUMA_KEEP_MEMINFO
  50 extern int phys_to_target_node(u64 start);
  51 #define phys_to_target_node phys_to_target_node
  52 extern int memory_add_physaddr_to_nid(u64 start);
  53 #define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
  54 #endif /* CONFIG_NUMA_KEEP_MEMINFO */
  55
  56 #endif /* CONFIG_NUMA_MEMBLKS */
  57
  58 #endif  /* __NUMA_MEMBLKS_H */